* feat(chat): merge app menus into all apps * style: simplify chat right pane * style: adjust chat history sidebar * chore: update chat title color * chore: remove chat title bottom border * refactor chat message bubbles * refactor chat message bubble UI * refactor chat feedback modal * refactor chat header actions * refactor mobile chat model selector * refactor mobile chat slider * add mobile chat new button * refactor chat home mobile layout * refactor chat citation UI * refactor chat quote reader UI * update mobile quote reader tabs * fix chat input spacing * refactor chat variable form * fix chat variable form order * feat: support editing chat messages * refactor: update chat variable UI * feat: collapse chat sidebar during generation * fix: update mobile clear history confirm modal * fix: show mobile home tool count label * fix: prevent tts model label overflow * fix: update desktop chat variable popover * fix: prevent quick app modal layout overflow * fix: add interactive response card border * fix: adjust mobile edit voice input layout * fix: move response tree arrow to left * fix: polish chat ui spacing * style: refine chat mobile ui details * style: adjust collapsed chat sidebar gap * style: collapse chat processing steps * style: refine chat mobile ui details * style: polish chat log detail panel * style: narrow chat form cards
